Refrigerating-structure



(No Model.)

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N. PETERS. Phola-Lilhagripher. Waiivingibn. n.0,

UNITED STATES PATENT OFFICE,

ROBERT HENRY \VATERS, OF MALDEN,.MASSAOHUSETTS, ASSIGNOR TO THE POSTREFRIGERATOR OAR COMPANY, OF PORTLAND, MAINE.

REFRIGERATlNG-STRUCTURE.

SPECIFICATION forming part of Letters Patent No. 275,0C0, dated April 3,1883.

' Application filed October30,1882. (No model.)

To all whom it may concern Be it known that 1, ROBERT HENRY WA- TERS,acitizen of the United States, residing at Malden, in the county ofMiddlesex and 5 State of Massachusetts, have invented certain new anduseful Improvements in Refrigerator- Structures; andIdo hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled [0 in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to letters or figures of reference markedthereon, which form a part of this specification.

I5 This invention relates to the construction of refrigeratorrailway-cars or other structures; and the object or thezinvention is toobtain a lowtemperature by excluding external air by using doublewallswith an intermediate air- 2 space, and the combination with suchwalls and air-space of sheets ot' thin non-ctmdncting material, allot'said parts being constructed and arranged snbstantially ashereinafter described.

The drawings accompanying this specifica- 2 tion represent, in Figure 1,an isometric sec tional view of a car embodying my improvements, whileFig. 2 is a horizontal cross-section of a portion of the walls and thenon-conducting material. Fig. .3. shows a modified o fOllIl ofconstruction.

In said drawings, A represents the floor of a railway-car or otherstructure; B, its roof, and O O its walls.

In carrying out my invention I construct 5 each wall 0 of the car orstructure double,

the outer shell of such wall being shown at a and the inner at b, anairspace, 0, remaining between the two. The sheathing of the outer wallis shown at d, and the upright joists or i 4.0 timbers of the same at e6, while the sheathing of the inner walls is shown at f, and the uprightjoists thereof at g g, &e. Between the joists e and g, I employ a sheet,I), of felt or other equivalent non-conducting material, to 5 excludeexternalheat, such sheet extending from top to bottom of the structure,andbeing held in position by the joists, which clamp it tightly; and iffound necessary the joists in turn may be fastened together at variouspoints 50 by screws or nails h, 820., preferably inserted from theinside of the structure. Between the inner and outer sheathing, d f, andtheir respective joists I add sheets i or j of paper, cotton cloth, orother analogous thin non'conductmaterial, to aid in excluding externalheat or 5 retaininternal cold.

. The root and floor ot' the structure may be constructed in mannersimilar to the side walls, asfabove explained, but for all practicalpurposes this will be found unnecessary. no

The air-space c is in itself a good non-conductor of heat. This,-iuconnection with the sheets of felt and paper, or their equivalents,protects to an eminent degree the interior of the structurefrom-entrance of exterior heat.

In Fig. 3 I have shown a modified form of the walls, in which thegeneral arrangement. is the same, except that'upon the outside sheets,i, and inside sheet,j, thin vertical stripsk/c, &c., are securedprevious to putting on the sheath- 7o ing. Upon these thin pieces thesheathing rests, and allows the paper sheets 'i orj to be put on inlarge sheets and remain intact during the process of wedging up theindividual boards comprising the sheathing.

I claim- 1 l. A ret'rigerating-structure having walls which consist ofan outer sheathing, an inner sheathing, two sheets, i andj, ofnon-condtu-ting material, a sheet, D, of felt, and upright 80 joists eg,to which the latter sheet is attached, saidsheets i andj b ing inproximity respectively to said outer sheathing and said inner sheathing,and said sheet I) being located in the middle of the space between saidouter 8; sheathing and said inner sheathing, substantially as set forth.

2. A refrigeratingstructure having walls which consist ot'an outersheathing, an inner sheathing, two sheets, i andj, ot'non-conductoingtnaterial, a sheet, D, of felt, upright joists eg, to which saidsheet I) is attached, and thin vertical strips it, these strips servingto hold the sheetst' andj at a short distance from the saidoutersheathing and inner sheathing, 5 respectively, and said sheet Dbeing located in the middle of the space between said outer sheathingand inner sheathing, substantially as set forth.

In testimony whereof I affix my signature I00 in presence of twowitnesses.

ROBERT HENRY WATERS.

Witnesses:

H. E. Loner F. CURTIS.

